Drilling mechanism



Sept. 20, 1932. F. w. voDoz DRILLING MECHANISM Filed Jurie 11, 1928 2Sheets-Sheet l 12150511 iol EL. P

w 4 .nhmun/ //W Sept. *20, 1932. F Wl VODOZ 1,878,036

DRILLING MECHANI SM Filed June'll, 1928 2 Sheets-Sheet 2 J6 I7 @l 74 39/f c?? 5 j?? Y Q. N197 u l Q3 I l 80 94 L 95 5 A; 1I @z '1wi S7? j a.P5114 U50/riz@ 1 chineof the filed March f' use of a -vides a new andnovel Patented sept. zo, 1932' UNITED rs'raiizs FREDERICK w. von'oz, ior WILMETIE, TUBING COMPANY, or cIIIcAGd ILLINOIS, AssIGNoR -ToGooniJIAN 1vIANUrAcf ILLINOIS, A CORPORATION or ILLINOIS DRILLINGMEcIIANIsivI Appiieation mea June 11, 192s. serial No. 284,471.

This invention relatesto improvements in drilling mechanisms,Aparticularly adapted for use in coal mines, and has for its principalobject to provide a new and improved drilling vmechanism in combinationwith a mining machine or similar power mechanism and which may bemounted on and operated from said mining machine. Y Y

Otherobj ects of my invention will appear from time to time as thiscspecification proceeds. f Y Y A prior application Serial Number263,402, 21, 1928,- shows an improved form of drilling mechanism incombination with a coalmining machine of the shortwall type. My presentinvention differs from my prior invention inthat an improved form ofdrilling mechanism is shown which eliminates the feeding bar .for thedrill and promeans of feeding said drill into the coal. Y

The drilling mechanism herein illustrated is shown in combination with amining mabreast type, which is well known While said drilling mechanismmay be mounted on a shortwall machine, or on any type of power device,as well as on a breast machine, it is particularly desirable to to theart.

3h mount said drilling mechanism on .a breast machine in driving narrowrooms or entries in thatv the drill is immediately in position to drilla hole in the mine wall when the machine has completed its undercuttingoperation.

My invention may -be more clearly under.- stood with reference to theaccompanying drawings, wherein i Figure 1 is a sidev elevation of amining machine of the breast type having my invention applied thereto;

Figure 2 is an enlarged vertical partial sectional view of the drillinghead taken substantially on the longitudinal center line i thereofFigure 3 is a cross-sectional view taken on line 3 3 of Figure 2;

Figure 4 is an enlarged fragmentary sectional view vof` the'drivingmechanism for connecting the drillw'ith the mining machine motor; and

ving machine of the ordinary f nism for said Figure 5 is an end view ofthe driving mechanism, for connecting the drill with the miningmachinemotor, with parts removed vand in section to 'more clearly show theydetails thereof. y Y

In thev drawings, one embodimenty of my invention is illustrated asapplied to a minbreast type having a stationary frame 10 and a`movableframe 11.l The movable frame11 islreciprocably movable on the stationaryframel() and has achain carrying cutter bar 12, projecting forwardlytherefrom which is fed into the face of the coal to cut a kerf thereinby forward movement of said movable frame on the stationary frame 10.The lcutting mechanism and meansfor reciprocably moving the movableframe 11 on the stationary frame 10 are operatively driven from anelectric motor' 13 through a suitable gear train of the well known typegenerally used in mining machines of this design which-is not hereinshown since it is no part of my invention.

A drilling mechanism is supported bodily on said machine, herein beingmounted lon the rearward end thereof on a reduction gear supportingframe 15 for the driving mechahereinafter bedescribed,k and comprises ingeneral'a member 16 trunnioned on the reduction gear supporting frame 15having a tubular Varm 17 projecting longitudinally forwardly therefromwhich in turn has a drilling head 18 adjustably mounted on its forwardend. 1

' It. may here be seen that-the entire `drilling mechanism is trunnionedon the support 15 which is supported on the rearward end of the motor13, which in turn is supported on the movable frame 11 and that when themovable frame 11 has finished its forward movement and the cutter bar 12has undercut the coal to the desired depth, that said '1 drilling:mechanism which will Y J 20 on the movable :e heiter.

about the axis of the member 16. A member 19 is provided to support thedrilling head 18 in any desired position of adjustment and extends fromsaid drilling head to a member frame 11. A plurality of holes 21 areprovided in the member 19 for Xing ,Seid memberto the member atthevarious positions of vertical adjustment -of thev drilling head 18 bymeans of afnut 4and anyethereuteble device. 'The .drilling heed 1 8 is,supported (on a member'22 which lits on 'the forward end of the tubularsupporting arm 17. Thememher 22 may be clamped or held on the forwardend of the tubular arm L17 ;by any,suitabl e means well known to the art(not herein shown.) so. asto be rotatable aboutthe tubular gilrm 17andiheld inivariou's desired Apositions .of adjustment vwithrespecttosaidarm. A `drill.Supporting member 23-istrunnioned on theforward portion of the member 22. `The drillsupperting memberf23 is made-upfof a -lQWer .pn-rtion' 23a and -an yupper fportion 236. Theupperportionk 235 and lower portion'2'3a farefheld :together fby suitablevnuts and .bolts a-:indicated at 24. A bearing-25 is provided 1.in uthe.drill supporting member :23 for .receiving the outer periphery of a hub.26 of a spur gea-r 27. The -extreme forward and flf'lewalfd portions ofthe `drillsupporting member y2 8 `form a nid-ing ,support for a.'iiliflll'lo.. I A,:spacing strip 32 is .provided to` holdthedrilLSuppOlting member-.23 .in Aits several an.- gful'ar positionsofad-justment `withrrespect to 'thfmember 22. llhespacing stri-13:32 Lis:fasftrled to` 'the/drill supporting memberI 23 vby illlel OfafeapScrewfr orlany othersuitable hQld-ng .device land has a' plurality Aofholes 36 therein adapted to register `withva yhole inthemember 22 .andtoybe fheld .to said .member ,by -means of :a .cap :screw .37 lor any-Qthersutableholdingrdevice.

@he pMQtal axis ,of the .drill supporting memhelf is tangential- .etofthe pitch lineof :hefmurgear The spur gear 275isdriven hy aespurgearf.j .ournaled within `the mem- .-ber-22 and'ekeyedto a shaftf) .which is.driven frcmfthemQtor 123 :byqa suitable gear `train :whinh :will.hereinafter :more fullybe ex- .-plained. The gears v2 gand 38 areprovided with relatively deep teeth chamferedat their .edges Sefthegearz .maydrive-.the gear 27 in :all ipcsitiens Yof adjustment' of ythedrilling head1* l'wth IfeSpect tofithe ftubulararm 17. ,A @Win40iis'prfwided .en the hubr-26 o .f .the .gear-127;, andisgin-tegraltherewith.` The worm 4th-.has .fdr-.vingzI connection with. .a .wormgear 441 haying a ehub y42 thereon journaled in a hcusingit .on theAupper portion 235 of the drillisupporti-ng member 28. A vhub 45 entheoppositeend.of-the worm gear 41 from the hub 42 is in the shape of afrustumlof afcone and-mayfbefengaged withthe inner periphery L ,ofabobbin46 for driving said fbobbin. 'The housing 43 and-hub 45respeeteto 4said shaft. are provided lto move 'housing 43 at "53. A'nut' bobbin 46 is mounted on a raised portion 44 of a shaft 47. Theshaft 47 is hollow for a portion of its length and is journaled in thehousing 43 at one end.

The shaft 47 passes through the hubs 42 and 45 of the worm gear 41 andthe shoulders 'formed iby the `raisedportion'44 about the of the wormgear 41 to lprevent end movement of said worm andshaft. A. rodg48.isslidable in thehollow portion of the shaft47, ,A pin.49..ronriectsthe rod 48 with the bobbin 46 for engaging orzdisengaging the innerperiphery of said bobbin with thehub 45 of the worm gear 41.

:Sllitlbleslots.'505D-are provided in the shaft 47 to allow for movement0f the pin 49 with Suitable tlever 'means the rod T48 andi bobbin 46;longitudinally with' repecttothe fhub 45 of thelworm-gear 41. id'meansherein .comprise-a member 51 freely mountedo'nlthe -ou-terrend-of' therod 48 andabutting-a shoul- -der .on-said rod `and having lpivotalconnec- 52 pivoted to the 54 and washer 55 tion with a forked lever isprovided on the outer A tovprevent longitudinal movement of the `member51 with respectto the rod 48;- `Move men-tof the Vforked lever52 in onedirection orthe other fthereforeemoves the member 51 `and rod 48.-.toengage-or disengagetheinner periphery y of the bobbin 46v with the hub45 vof `the worm gear41. :Locking Ameans are provided for .locking lthelbobbin 46 yin `an engaged or disengaged position with respect totheihub .45.0f the worm gear41 whichiherein comprise a lever 56 pivotedtothe fforked lever 52 engageablewith apin 5.7 on the housing 43. f

Flexible powermeans of any suitable type gea-r l end of therod 48 whichis Apreferably shown herein as a wire rope=60 is fastened to the bobbin46` atonc endl and 4passes 4from .said bobbin rearwardly around asheave61 on. the rearwardend'of the drill 30 and forwardly to the drill suprporting member 23 where .said Awire rope eis `ii-Xed at itsoppositecnd-toisaid drill support.- ing member. at162y temove the drill30longi.- tudinally. with-respect'tothedrillsupporting member 23 as saidflexible power means is wound on the bobbin 46. "Iz-he sheavefl is heldin the-end ofafdrill feeding member 65 freely mounted on the rearwardend vof the drill 30 sosaid drill may rotate withinsaid member. A thrustmember -66 within ythe drill feeding member 65 abn-ts ,therearward Vendof the drill 30 .to prevent friction Ybetween the endgoftthe dri-ll- 30and the y.drill feeding `member 65 as .said member is feed-V ing thedrill longitudinally with respect to the drill supporting lmember 2 3. Aforked member 70 is pivoted to vthe drill feeding member 65 and extendsdownwardly to the tubular arm 17 a prongof said fork being on eaeh sideof said tubular `arm and slidable .into the coal whereby I eliminate theuse-sofa thread or feeding bar andA support` said drill at a pointadjacent theface of the ycoal-insurlnmanaccuratedrill hole and-lessening.the

possibilitiesof'binding of said drill and still arrange my :feedingdevicel so that the drill may-be fedinto the coallto the entire depth of'thefholegdesired'in one continuous operation.

Although I :have herein shown andn described one yform' 1n which myinvention may be embodied in combination with afmining machineit will beunderstood that the constructionand arrangement of theparts may orpowerdevice. f

-I claim as my invention:

1.In adrilling apparatus,-afdrill, af drilling head comprising a drillsupporting member, a drill rotating-member on saiddrill supportingmember, winding means supporting member, a sheave detachably con-.,nected with the rearward portion of said on said' drill drillaflexiblefeeding member passing rearwardly from said winding meansaboutsa-id sheave and forwardly to said drill supporting member, and amember pivotally connected to said sheavc for holding said sheave inalignment lwith said winding means.

2. In a drilling apparatus, a drill, a drilling head comprising a drillsupporting .member, a drill rotating member on said drill supportingmember, winding means on said drill `supporting member, a drill`feedingmember having` engagement with said drill compris.- ing a sleeveinsertable on the end of said drill having a sheave on, the rearward endthereof, a flexible feeding member passing rearwardly from said windingmeans about said sheave and forwardly to said drill supporting member,anda member pivotally connected to said sleeve for holding said sheavein alignment with-said winding means. Y

.3. -In a drilling apparatus, a drill, a drilling head comprising adrillsupporting member, a drill rotating member on said drill supportingmember, winding means onsaid drill supporting member, a drill feedingmember havingengagement with said drill comprising a sleeve having asheave on the rearward end' thereof, a flexible feeding member passingVrearwardly from said winding' means about said sheave and forwardly tosaid drill supporting member, 1 and a memberv pivotally connected vtosaid'drill feeding member for holding' said sheave in alignment withsaidwinding'means.

4. In van apparatus of the class described, a drilling head including adrill rotating member, a drill, means for supporting said drilling headfor drilling in a horizontal plane or various angular planes -withrespect to the horizontal, means for feeding said 'drill includingV'rection changing device onrthe rearwardend flexible feeding means, a`diof said drill adapted to be engaged lby said flexible feeding meansand means for hold- .ing said-directionchanging device in alignmentwlthsaid flexible feeding means-comprising AaV member having connection withsaid direction changing device and adapted to engage said drilling headvsupporting y means.

5. In an apparatus of the class described,.a drillinghcad including adrill rotating member, a drill,means forzsupporting said drilling headfor drilling in a horizontal plane or-va-rious angular planes withvrespect to thel horizontal, means for feeding said drill incl'uding`llexible feeding means, a direction changing'device on the rearward'endofsaid drilladapted to bev engaged'by said flexible feedingmeans andmeansforholding said direction changing device in alignment with saidflexible feeding means comprising a-deendino' member havin@ connection'rwith said direction changing device andadapted to 'slidably engage saiddrilling head-supporting fmeans.

'6. In an apparatus of the class described, la. drilling head includingAa drill rotating member, a drill, means for feeding said drill includingflexible feeding means, a direction changing device on'the rearward endof said drill adapted to be engagedv by said flexiblel feeding means andmeans .for holding said directionchanging device in alignment with saidflexible feeding means comprising a'member having pivotal connectionwith said directionVchanging device and adapted tol slidably engageextraneous means., 'A i 1 7. 'Inan apparatusofthe class described, avdrilling head including a drill rotating member, a drill, means forsupporting said drilling head forzdrilling in a horizontal plane orvarious angular planes with respect tothe horizontal, means for feedingsaid drill including flexible feeding means, a direction changing devicedetachably connecti- -ble with the rearward end of said drill adaptedtobe engaged by said flexible feeding means andimeans for holding saiddirection changing device in alignment .with said llexiblefeeding meanscomprising a member havingconnectionwith said direction changing deviceand adapted to slidably engage said drillinghead supporting means.

8. In an apparatus ofthe class described, avr drilling head including adrill rotating member, a drill', vmeans for feeding said drillincluding'flexible feeding means,'a direction changing device detachablyconnectible with the 'rearward end of saiddrill adapted to be engaged bysaid flexible feeding means and means for holding said directionchanging device inv alignment with said llexible feeding :meanscomprising a member with respect to the drill supporting member es. YKeyways 71 are provided in the drill 8() Vand extend substantially theentire length of said drill. Feather keys 72 are fixed on the innerperiphery of the gear 27 to engage the keyways 71 torotate the drill 39on rotation of the gear 27, and to allow said drill .to be moved throughsaid gear as said drill is be ing rotated by said gear. The keys 72 arechamfered at their forward and rearward ends to eliminate thepossibility of the keys 72 fouling in the keyways 71 on the 'drill 30.

It may now be seen that. rotation .of the gear 27 will rotate the drill80 and willalso cause rotation of the worm gear 41 which will rotate thebobbin 46 when the inner periphery of said bobbin engages the hub 45 ofs aid worm gear and thus wind in the flexible power device which willmove the drill 30 longitudinally through the hub of the gear 27 to feedsaid drill into the material it is desired to drill. In cases of extremeload or strain on the drill 30 translational movement of said drill willautomatically be stopped by slippage of the bobbin 46 on the hub 45 ofthe worm gear 41.

' The vsha-ft 39 within the tubular drill sup porting arm 17 has a spurgear 74 keyed to its lower end. The gear 74 is journaled on itshubwithin the member 16 and the pitch circle of said gear is tangentialto the pivotal axis of the member 16. rhe spur gear 74 is driven byY aspur gear 75 journaled in the reduction gear supporting frame 15. Thepitch circle of the gear 75 is tangential to the pivotal axis of themember 16 and the teeth Yof the gears 74 and 75 are relatively deep andchamfered at their edges to prevent binding between the teeth of saidgears when the gear 75 is driving `the gear 74 at the' variouspermissible angles of adjustment of the tubular drill supporting arm 17.The gear 75 is keyed to a shaft 76 which is driven by a gear 78 keyedthereon. The gear 78 is in turn driven by a pinion 79V on a shaft 80slidable longitudinally with respect to the reduction gear supportingframe 15. An internal Vgear 81 drives the shaft 80 and pinion 79 and isin turn driven by a pinion 82 keyed to a member 83 journaled in the gearsupport-ing frame 15 and having a socket therein fitting on an end of amotor shaft 84`of the motor 13. A portion 85 of said socket is squaredto engage a squared end 86 of the motor shaft 84 so the member 88 may bedriven by said motor shaft.

It may be here observed that the reduction gearsupporting frame 15 issplit in two sections and that one section 89 forms an end plate for themotor 13, supports the drilling mechanism for pivotal movementthereabout, and serves as a support for the reduction gear mechanism,while another section 90 serves asa support for one end of theVVlongitudinally movable shat 80.`

Means are provided on the section 90 of the reduction gear supportingframe 15 for longitudinally moving the shaft 80, internal gear 81 andpinion 7 9, for disengaging said internal gear and pinion from thepinion 82 and gear 78 to disconnect the drill driving mechanism from themotor 13. Said means may be of any comprise a forked hand lever 92pivoted to theV section 90 of the reduction gear supporting frame 15 andhaving pivotal connection with a member 98 freely mounted on the shaft80. The member 93 abuts ashoulder on the shaft 80 at one end and awasher 94 at its other end held on the shaft 80 by a nut 95 threadedthereon, so that movement of the member 93 will cause movement of thevshaft 80. Locking means are provided to lock the forked hand lever 92 inan eXtreme inward or outward position with respect to the section 90 ofthe reduction gear supporting frame 15 for engaging or disengaging thedrill driving mechanism with the motor 13 which herein comprises a lever96 pivoted to the forked lever 92 and engageable with a pin 97 on thesection 90.

Figure 1 shows the drilling mechanism on a breast machine, when saidmachine is in position to undercut a kerf in the mine wall and alsoshows said machine in dotted after said machine has cut said kerf,showing the drill 30 drilling a hole in said mine wall. Then the cutterbar 12 has cut a kerf to the desired depth forward movement of themovable frame 11 is stopped, and the drilling mechanism is adjusted tothe desired height and position for drilling a hole in the .mine wall.The motor pinion 82 is engaged with the internal gear 81 by movement ofthe hand lever 92 to drive the shaft 39 within the tubular drillsupporting arm 17 and to rotate the spur gear 27 and the drill 30.Movement of the hand lever 52 then engages the inner periphery of thebobbin 46 with the hub 45 on the worm gear 41 to rotate said bobbin andwind in the flexible power device 60 to feed the drill 30 into the coal.In case of binding of the drill 30 or in case said drill shouldencounter hard spots in the coal, feeding of said drill willautomatically be stopped by slippage of the inner periphery of thebobbin 46 on the hub 45 of the worm gear 41. When the hole has beendrilled to the desired depth, the movable frame 11 is moved rearwardlyaway from'the face of the coal drawing the cutter bar 12 and drill 8Otherewith. f

It may now be seen that I have provided a drilling mechanism adapted tobemounted on and operable froma power device or mining machine of anywell known type, but particuwell known type but hereini fsa y.

iic

larly adapted for use on a mining machine Y of the breast type, and thatIprovide a new and improved method of feeding my drill leises@ havingpivotal connection with said direction changing device and adapted toengage extraneous means.

9. In an apparatus of the class described, a drilling head including adrill rotating member, a drill, means for feeding said drill includingflexible feeding means, a direction changing device detachablyconnectible with the rearward end of said drill adapted to be engaged bysaid flexible feeding means and means for holding said directionchanging device in alignment with said flexible feeding means comprisinga depending member having pivotal connection with said directionchanging device and adapted to slidably engaged extraneous means.

10. In an apparatus of the class described, a portable support, an armhaving pivotal connection with said portable support, a drilling headhaving pivotal connection with the opposite end of said arm, a drillsupported by said drilling head, means for feeding said drill includingflexible feeding means, a direction changing device on the rearward endof said drill adapted to be engaged by said flexible feeding means, andmeans for holding said direction changing device in alignment with saidflexible feeding means comprising a member having connection with saiddirection changing device and adapted to engage said arm.

11. In an apparatus of the class described, a portable support, an armhaving pivotal connection with said portable support, a drilling headhaving pivotal connection with the opposite end of said arm, a drillsupported by said drilling head, means for feeding said drill includingflexible feeding means, a direction changing device on the rearward endof said drill adapted to be engaged by said flexible feeding means, andmeans for holding said direction changing device in alignment with saidexible feeding means comprising a forked member having connection withsaid direction changing device and adapted to have slidable engagementwith said arm.

12. In an apparatus of the class described, a portable support, an armhaving pivotal connection with said portable support, a drilling headhaving pivotal connection with the opposite end of said arm, a drillsupported on said drilling head, means for feeding said drill includingflexible feeding means, a direction changing device on the rearward endof said drill adapted to be engaged by said flexible feeding means, andmeans for holding said direction changing device in alignment with saidflexible feeding means comprising a member having pivotal connectionwith said adapted to have slidable engagement with said arm.

13. In an apparatus of the class described, a portable support, an armhaving pivotal direction changing device andv connection with saidportable support,y a drilling head having pivotal connection with theopposite end of said arm, by saiddrillingi'head, means for feeding saiddrill including flexible feeding means, a direction changing device onthe rearward end of said drill-r` adapted t0 be engaged-by saidflexiblefeeding means, and meansfor holdingsaid direction changingdevice in alignment with saidflexible feeding means comprising avdepending forked ,member having pivotal connection with said directionchanging device and adapted to have engagement Wh-Sadafm i. p

141. In an apparatus of the class described, a portable support, an armhaving pivotal connection withsaid portable support, a drilling headhaving pivotal connection with the opposite end of said arm, a drillsupported by said drilling head, means for feeding said drill includingflexible feeding means, a direction changing device detachably connectedwith the rearward end of said drill adapted to be engaged by saidflexible feeding means, and means for holding said direction changingdevice in alignment with said flexible feeding means comprising a memberhaving connection with said direction changing device and adapted toengage said arm.

15. In an apparatus of the class described, a portable support, an armhaving pivotal connection with said portable support, a drilling headhaving pivotal connection with the opposite end of said arm, a drillsupported by said drilling head, means for feeding said drill includingflexible feeding means, a direction changing device detachably connectedwith the rearward end of said drill adapted to be engaged by saidflexible feeding means, and means for holding said direction changingdevice in alignment with said flexible feeding means comprising a forkedmember having connection with said direction changing device and adaptedto have slidable engagement with said arm.

16. In an apparatus of the class described, a portable support, and armhaving pivotal connection with said portable support, a drilling headhaving pivotal connection with the opposite end of said arm, a drillsupported by said drilling head, means for feeding said drill includingflexible feeding means, a direction changing device detachably connectedwith the rearward end of said drill adapted to be engaged by saidflexible feeding means, and means for holding said direction changingdevice in alignment with said flexible feeding means comprising a memberhaving pivotal connection with said dir-ection changing device andadapted to have slidable engagement with said arm.

17. In an apparatus of the class described, a portable support, an armhaving pivotal connection with said portable support, a drilling headhaving pivotal connection with the a drill supported rec-tion' changingdevde d(eozeliafblyl 'connected' With the 'rearward end ofs'aid'dillfadptedfo be engaged by said flexibler feediii'g Iiiea'r`9` and'means for holdingv said direction chaiig# ing device in:iligrultlel11",-l vlihf Said* flx'b'l 4 .feeding means comprising aidepending" forked member" having pivotal Corinecti-'ofi` l with said'diection changihg device andv adapted to have slidable engag'ementwith'4said` arm i Y Signed at Chicago, in the coli'ty of Cook rand'f'Stafte'off Illinois, this 6th day of Jue, 1 A:i` 13.11928; 1 l

' FREDERICK W. VTDDZ.

